The relationship between myopia progression and axial elongation in children wearing orthokeratology contact lenses

2021 ◽  
pp. 101517
Author(s):  
Zhi Chen ◽  
Zhe Zhang ◽  
Feng Xue ◽  
Jiaqi Zhou ◽  
Li Zeng ◽  
...  
Keyword(s):  
Contact Lenses ◽  
Myopia Progression ◽  
Axial Elongation ◽  
The Relationship

scholarly journals Myopia Control with a Novel Peripheral Gradient Soft Lens and Orthokeratology: A 2-Year Clinical Trial

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Jaime Pauné ◽  
Hari Morales ◽  
Jesús Armengol ◽  
Lluisa Quevedo ◽  
Miguel Faria-Ribeiro ◽  
...  
Keyword(s):  
Contact Lenses ◽  
Study Groups ◽  
Control Group ◽  
Myopia Progression ◽  
Axial Elongation ◽  
Children And Adolescent ◽  
Single Vision ◽  
The Mean ◽  
Prospective Longitudinal ◽  
Myopia Control

Objective.To evaluate the degree of axial elongation with soft radial refractive gradient (SRRG) contact lenses, orthokeratology (OK), and single vision (SV) spectacle lenses (control) during a period of 1 year before treatment and 2 years after treatment.Methods.This was a prospective, longitudinal, nonrandomized study. The study groups consisted of 30, 29, and 41 children, respectively. The axial length (AL) was measured during 2 years after recruitment and lens fitting.Results.The baseline refractive sphere was correlated significantly (Spearman’s Rho (ρ) correlation = 0.542;P< 0.0001) with the amount of myopia progression before baseline. After 2 years, the mean myopia progression values for the SRRG, OK, and SV groups were −0.56 ± 0.51, −0.32 ± 0.53, and −0.98 ± 0.58 diopter, respectively. The results represent reductions in myopic progression of 43% and 67% for the SRRG and OK groups, respectively, compared to the SV group. The AL increased 27% and 38% less in the SRRG and OK groups, respectively compared with the SV group at the 2-year visit (P< 0.05). Axial elongation was not significantly different between SRRG and OK (P= 0.430).Conclusion.The SRRG lens significantly decreased AL elongation compared to the SV control group. The SRRG lens was similarly effective to OK in preventing myopia progression in myopic children and adolescent.

scholarly journals Myopia Control with Combination Low-Dose Atropine and Peripheral Defocus Soft Contact Lenses: A Case Series

2021 ◽  
pp. 548-554
Author(s):  
Nir Erdinest ◽  
Naomi London ◽  
Nadav Levinger ◽  
Yair Morad
Keyword(s):  
Low Dose ◽  
Contact Lenses ◽  
Case Series ◽  
Concentric Circle ◽  
Retrospective Case ◽  
Soft Contact ◽  
Myopia Progression ◽  
Soft Contact Lenses ◽  
Center Distance ◽  
Myopia Control

The goal of this retrospective case series is to demonstrate the effectivity of combination low-dose atropine therapy with peripheral defocus, double concentric circle design with a center distance soft contact lenses at controlling myopia progression over 1 year of treatment. Included in this series are 3 female children aged 8–10 years with progressing myopia averaging −4.37 ± 0.88 D at the beginning of treatment. Their average annual myopic progression during the 3 years prior to therapy was 1.12 ± 0.75 D. They had not attempted any myopia control treatments prior to this therapy. The children were treated with a combination of 0.01% atropine therapy with spherical peripheral defocus daily replacement soft lenses MiSight<sup>®</sup> 1 day (Cooper Vision, Phoenix, AZ, USA). They underwent cycloplegic refraction, and a slit-lamp evaluation every 6 months which confirmed no adverse reactions or staining was present. Each of the 3 children exhibited an average of 0.25 ± 0.25 D of myopia progression at the end of 1 year of treatment. To the best of the authors’ knowledge, this is the first published study exhibiting that combining low-dose atropine and peripheral defocus soft contact lenses is effective at controlling children’s moderate to severe myopia progression during 1 year of therapy.

The Relationship of Near-Vision Peripheral Acuity and Far-Vision Search Performance

1967 ◽  
Vol 9 (4) ◽  
pp. 301-303
Author(s):  
Dorothy M. Johnston
Keyword(s):  
Search Task ◽  
Contact Lenses ◽  
Search Performance ◽  
Near Vision ◽  
Low Correlation ◽  
Relationship Of ◽  
The Relationship ◽  
Acuity Test

Thirty-five subjects who did not wear glasses or contact lenses and with foveal acuity of 20/30 or better monocular and binocular far and near vision were given a near-vision peripheral acuity test and a farvision search task. The results, which showed a low correlation between near-vision peripheral acuity and far-vision search performance, are consistent with Giese's findings of low correlations between near and far foveal acuity.

The Relationship between Visual Acuity, Subjective Vision, and Willingness to Purchase Simultaneous-image Contact Lenses

2019 ◽  
Vol 96 (4) ◽  
pp. 283-290 ◽  
Author(s):  
Monica Jong ◽  
Daniel Tilia ◽  
Jennifer Sha ◽  
Jennie Diec ◽  
Varghese Thomas ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Contact Lenses ◽  
Willingness To Purchase ◽  
The Relationship

scholarly journals Higher-order aberrations and their association with axial elongation in highly myopic children and adolescents

2022 ◽  
pp. bjophthalmol-2021-319769
Author(s):  
Yupeng Xu ◽  
Junjie Deng ◽  
Bo Zhang ◽  
Xian Xu ◽  
Tianyu Cheng ◽  
...  
Keyword(s):  
Children And Adolescents ◽  
High Myopia ◽  
Mixed Model ◽  
Linear Mixed Model ◽  
Spherical Aberration ◽  
Age Groups ◽  
Higher Order ◽  
Higher Order Aberrations ◽  
Myopia Progression ◽  
Axial Elongation

BackgroundVision-dependent mechanisms play a role in myopia progression in childhood. Thus, we investigated the distribution of ocular and corneal higher-order aberrations (HOAs) in highly myopic Chinese children and adolescents and the relationship between HOA components and 1-year axial eye growth.MethodsBaseline cycloplegic ocular and corneal HOAs, axial length (AL), spherical equivalent (SE), astigmatism and interpupillary distance (IPD) were determined for the right eyes of 458 highly myopic (SE ≤−5.0D) subjects. HOAs were compared among baseline age groups (≤12 years, 13–15 years and 16–18 years). Ninety-nine subjects completed the 1-year follow-up. Linear mixed model analyses were applied to determine the association between HOA components, other known confounding variables (age, gender, SE, astigmatism and IPD) and axial growth. A comparison with data from an early study of moderate myopia were conducted.ResultsAlmost all ocular HOAs and few corneal HOAs exhibited significant differences between different age groups (all p<0.05). After 1 year, only ocular HOA components was significantly negative associated with a longer AL, including secondary horizontal comatic aberration (p=0.019), primary spherical aberration (p<0.001) and spherical HOA (p=0.026). Comparing with the moderate myopia data, the association of comatic aberration with AL growth was only found in high myopia.ConclusionIn highly myopic children and adolescents, lower levels of annual ocular secondary horizontal comatic aberration changes, besides spherical aberrations, were associated with axial elongation. This suggests that ocular HOA plays a potential role in refractive development in high myopia.

scholarly journals The Effectiveness of Different Optical Correction Methods in Children and Adolescents with Progressive Myopia Based on a Comparative Evaluation of the Accommodation and Axial Length of Eyes

2018 ◽  
Vol 15 (2S) ◽  
pp. 65-72 ◽  
Author(s):  
M. M. Sitka ◽  
S. G. Bodrova ◽  
N. A. Pozdeyeva
Keyword(s):  
Children And Adolescents ◽  
Axial Length ◽  
Contact Lenses ◽  
Control Group ◽  
Soft Contact ◽  
Axial Elongation ◽  
Soft Contact Lenses ◽  
Optical Correction ◽  
Progressive Myopia

Objective: to determine optimal method of progressive myopia optical correction in children and adolescents.Patients and methods. Conducted 5-year prospective clinical and instrumental examination of 494 children with myopia using orthokeratology lenses, soft contact lenses and glasses. 61 children (the average age 11.7 ± 2.36 years) with myopia –2.87 ± 1.1 D and astigmatism –0.58 ± 0.27 D used orthokeratological lens. 92 children (the average age 12.8 ± 1.51 years) with myopia –3.66 ± 1.07 D, astigmatism –0.53 ± 0.18 D wore soft contact lens. 79 children (the average age 11.52 ± 1.78 years) with myopia –1.59 ± 1.08 D, astigmatism –0.71 ± 0.54 D used glasses with monofocal lenses, with full correction. The control group consisted of 249 children (the average age 9.1 ± 1.14 years) with initial emmetropia. Determination of refraction, subjective and objective determination of accommodation, and axial length of the eye (“IOL-master”) was conducted in children.Results. The maximum progression of myopia was observed in younger children (8–9 years). Correction of myopia with orthokeratology lenses (OKLs) was accompanied by the lowest dynamics of changes in axial length (axial elongation 0,44 ± 0,32 mm) compared to the correction with soft contact lenses (SCLs) (axial elongation 0,73 ± 0,36 mm), spectacle correction (axial elongation 1,39 ± 0,47 mm) and the control group (axial elongation 0,6 ± 0,41 mm). In all children with myopia, at the beginning of the study, there were reduced values reserve of relative accommodation and an objective accommodative response. Correction of myopia with OKLs (p = 0,0002) and SCLs (p = 0,036) provides the normalization of subjective and objective reserve indication of relative accommodation in both age group in comparison of spectacles correction.Conclusion. Correction with orthokeratology lens in children with progressive myopia contributes to the minimum growth length of the eye. Correction of myopia OKLs and MKL improves of subjective and objective indicators of relative accommodation reserve. 

Myopiekontrolle: aktuelle Strategien

2021 ◽  
Vol 1 (5) ◽  
pp. 148-155
Keyword(s):  
Contact Lenses ◽  
Long Term Effects ◽  
Soft Contact ◽  
Myopia Progression ◽  
Soft Contact Lenses ◽  
Slowing Down ◽  
The Future ◽  
Progressive Myopia ◽  
The Individual ◽  
Myopia Control

Purpose. The prevalence of myopia is increasing worldwide and its long-term effects can have major impacts on eye health. Paediatric onset of myopia leads to a higher risk for developing high levels of myopia in adulthood. Slowing down or stopping myopia progression is an important task for the future. Material and Methods. Based on a literature review, the latest developments in the field of myopia control for children were summarized. The current study situation for orthokeratology, soft contact lenses, atropine therapy and spectacle lenses for the management of myopia is discussed in detail. Results. Results on the safety and effectiveness of orthokeratology and modified soft contact lenses are exceedingly consistent. Soft multifocal contact lenses, as well as newer spectacle lenses, recently received regulatory approval for myopia control. Studies on the administration of atropine recommend a dosage of 0.01 - 0.05 %. All methods slow down myopia progression and decrease axial length growth of the eye. Side effects, adverse events or discontinuation of treatment only occur in the rarest of cases. Orthokeratology and atropine continue to deliver the best results. Conclusion. From today’s perspective, carrying out myopia control can be recommended with great certainty. The choice of method depends on the individual requirements of each patient, with all methods offering success in reducing myopia progression. In the future, even more advanced contact lens geometries, more precise atropine dosages or improved optics of spectacle lenses will further increase the success of the treatment. Keywords. Progressive myopia, myopia control, children, contact lenses, atropine, spectacle lenses

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